Question

How do you simplify `(25+15i)-(25-6i)` and write the complex number in standard form?

Answer 1

`21i`

Explanation:

Standard form: `a+bi rarr a` is real

`(25+15i)-(25-6i) rarr` Distribute the negative

`25+15i-25-(-6i)`

`25+15i-25+6i rarr` Combine like terms

`0+21i`

`21i`